Pot type burner with corrugated pilot ring



8 1945- J. L. BREESE ETAL POT TYPE BURNER WITH CORRUGATED PILOT RING Filed March 14, 1942 Fzy. 1. 8

7 m 5 an m 6 4! Q 2/ A? Q .1 Q 0 G 9 7 G I 4/ G 0 /5 e 2 w B Q V 9 I- 1 9 Q S 6 a k S Q Q Patented Aug. 14, 1945 POT TYPE BURNER PILOT WITH CORRUGATED RING James L. Breese and Bruce Hayter, Santa Fe, N. Men, assignors to Oil Devices, Santa Fe, N. Mex., a limited partnership of Illinois Application March 14, 1942, Serial No. 434,666

3 Claims.

Our invention relates to an improvement in pot type burners, and has for one purpose the provision of an improved baflle structure for such burners.

Another purpose is to provide means for varying or controlling the relation between the air admitted above and below baflles for pot type burners, for example a pilot baflle.

Other purposes will appear from time to time in the course of the specification and claims.

We illustrate our invention more or less diagrammatically in the accompanying drawing wherein:

Fig. 1 is a vertical axial section;

Fig. 2 is a section on the line 2-4 of Fig. 1;

and

Fig, 3 illustrates a variable level support. Like parts are indicated by like symbols throughout the specification and drawing.

Referring to the drawing, l generally indicates an outer housing, which may be of any suitable size, shape and proportion, and which we indicate as a generally cylindrical drum. The bottom may be supported and spaced upwardly from the supporting surface by any suitable supportin means, such as the legs 2. 3 is a bottom partition having an axial air inlet aperture 4. 5 indicates the burner pot, having a bottom portion 5 and an outwardly extending top flange I, which may be supported upon any suitable annular support 8 inwardly extending from the inner surface of the wall of the drum l. 9 is any suitable flame ring, centrally apertured as at it.

We illustrate a single row of primary air inlet apertures II and a Single row of secondary air inlet apertures I! located at a higher level. The secondary air inlet apertures are shown as upwardly and inwardly tilted and as individually larger in cross section and as more closely spaced than the primary air inlet apertures II. It will be understood that the apertures may be otherwise arranged in relation to the pot, but the disposition herein shown is practical.

l5 illustrates any suitable liquid fuel inlet or supply means, in communication with any suitable source of liquid fuel not herein shown. It will be understood that any suitable means, for example a float valve assembly, may be employed for varying or controlling the rate of flow of fuel inwardly along the pipe l5. Preferably means are provided for maintaining a minimum supply of fuel at the pilot stage sufficient to maintain a constant low flame. The stage may be increased by increasing the rate of flow or fuel, and at the high stage combustion takes place at or above the level of the secondary air inlet apertures I! or the flame ring 9. It will be understood that the liquid fuel delivered to the bottom 6 of the pot 5 is vaporized by the heat of combustion taking place thereabove. At the pilot stage this combustion takes place adjacent the level of the primary air inlet apertures H.

We illustrate a pilot ring or baffle structure which includes the corrugated ring or body generally indicated as 20. This corrugated ring has a plurality of folds, the folds being preferably of such size that each fold is aligned with a plurality of the primary ail inlet apertures II. The apertures 'on the lower side of such a fold, as at the area A of Fig. 1, therefore, deliver air to the space below the corrugated ring, while the apertures on the upper side of such a fold, as at B, deliver air to the space above the corrugated ring. The corrugated ring maybe strengthened or supported by a central ring 2|, which may be welded or otherwise secured thereto, and which is preferably substantially inwardly spaced from the wall of the pot 5. Any suitable means, such as supporting means or studs 22, ma be employed for supporting the ring structure, these studs engaging some of the folds of the ring 20.

Preferably the supporting means are so arranged as to permit a variation in the level of support of the baille which permits the relation between the air admitted below and the air admitted above the baffle or corrugated ring to be controlled or varied.

We may flnd it advantageous to provide means for raising or lowering the baffle structure and thus for varying the air admitted above and below the corrugated ring 20, Any suitable supporting means may be employed, but we illustrate for example, as in Fig. 3, eccentric studs 23, which may be set or rotated in any suitable manner. For example, we illustrate exterior handles 24, but this will be taken as illustrative rather than as restrictive.

It will be realized that, whereas we have described and illustrated a practical and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of our invention. We therefore wish that the description and drawings shall be taken as in a large sense illustrative or diagrammatic rather than as a limitation to the precise showing.

We claim:

1. In a pot type burner, a burner pot with a wall having a single row of primary air inlet apertures therein, means for delivering secondary air at a level adjacent the top of the pot, means for supplying a liquid fuel to the bottom of the pot, a centrally apertured baiiie ring including a radially corrugated portion, and means for supporting the ring at the general level of said single row of primary air inlet apertures,

some of said apertures being in communication with the space in the pot below said baflle and others being in communication with the space in the pot above said baflie, the upwardly concave bends of the radial corrugations being in communication with the space in the not above said baiiie, and means for raising and lowering said baliie ring within a range limited to maintain the corrugated portion at all times in general horizontal alignment with said single row of primary air inlet apertures, whereby the relative numbers of said apertures in communication with the space above and below the corrugated portion may be varied.

2. In a pot type burner, a burner pot with a wall having a single row of primary air inlet apertures therein, means for delivering secondary air at a level adjacent the top of the pot, means for supplying a liquid fuel to the bottom of the pot, a, centrally apertured baiiie ring including a radially corrugated portion, and means for supporting the ring at the general level of said single row of primary air inlet apertures, some of said apertures being in communication with the space in the pot below said bailie and others being in communication with the space in the pot above said baliie, the upwardly concave bends of the radial corrugations being in communication with the space in the pot above said battle, and means for raising and lowering said baflle ring within a range limited to maintain the corrugated portion at all times in general horizontal alignment with said single row of primary air inlet apertures, whereby the relative numbers of said apertures in communication with the space above and below the corrugated portion may be varied, said raising and lowering means including a plurality oi. eccentric studs rotatable in relation to the pot wall about generally radial axes and adapted to engage and support said baflie ring, and means for rotating said studs and for thereby raising and lowering said baflle ring,

3. In a pot type burner, a burner pot having an open end and a circumferential wall with a single row of primary air inlet apertures extending circumferentially thereabout, intermediate the ends of the pot, and having a single row of secondary air inlet apertures, adjacent the open end of the pot, extending circumterentially about said wall, means for supplying a liquid fuel to the interior of the pot, and a centrally aperturecl, radially corrugated ballie ring, and means for supporting said ring at the general level of the single row of primary air inlet apertures. some of said apertures being in communication with the space in the pot below the baflle ring, and others being in communication with the space in the pot above the bailie ring, and means for varying the level of said bailie ring, in relation to said row of primary air inlet apertures, within a range limited to maintain it at all times in general horizontal alignment with said single row of primary air inlet apertures.

JAMES L. BREESE. BRUCE HAYTm. 

